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OpenStudy (fanduekisses):
Is arc cos(-sqrt(3)/2) = 5pi/6 AND 7pi/6?
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jimthompson5910 (jim_thompson5910):
Look at the table shown on this page https://en.wikipedia.org/wiki/Inverse_trigonometric_functions You'll see that the range of arccosine is `0 <= y <= pi`. So the angle will be either in Q1 or Q2
OpenStudy (fanduekisses):
why?
OpenStudy (fanduekisses):
why the range?
OpenStudy (fanduekisses):
ohh bc arc means inverse?
jimthompson5910 (jim_thompson5910):
yes arccosine = inverse cosine
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OpenStudy (fanduekisses):
yeah the inverse lol
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